# STC SA2258CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Textron Aviation Inc, United States
- Description: Installation of Universal Navigation Corp. UNS-1 Flight Management System incorporating both Omega and Loran C sensors, Omega sensor only or Loran C sensor only.
- Applied: April 6, 1987
- Status date: April 27, 2017
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE)
- Certificate PDF: https://openairdocs.org/files/sha256/3c/1a/3c1a1d3e5521238a961d3e908baf35b204a92f7ac0a7d3a87f4fef4b84ff0ffc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/18AA88A0044704EE8625817D0051CEAE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2258CE

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company S550 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title SA2258CE Textron Aviation Inc.

One Cessna Boulevard Wichita, KS 67215 25 Federal Aviation Regulations.

Cessna S550 2 A22CE Installation of Universal Navigation Corp. UNS-1 Jr. Flight Management System incorporating both Omega and Loran-C sensors, Omega sensor only, or Loran-C sensor only, in accordance with Cessna ECR EC24432, Revision B, EC23652, Revision C, or EC23653, Revision A, respectively, or later FAA approved revision. Airplane Flight Manual Supplement 45, dated June 22, 1987, or later FAA approved revision must be inserted in the Airplane Flight Manual when the airplane is modified per this STC.

This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

April 27, 2017 April 6, 1987 June 22, 1987 Mark Fuller STC ODA administrator ODA-100129-CE

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

## Every issue (1)

- April 27, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/3c/1a/3c1a1d3e5521238a961d3e908baf35b204a92f7ac0a7d3a87f4fef4b84ff0ffc)

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